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Altera_Forum's avatar
Altera_Forum
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11 years ago

Modular SGDMA - Streaming to Memory Mapped Random first write.

Hi, I am using the Modular SGDMA to write memory into DDR3 memory, and then a second one to read it back out again. The reading is all working fine and writing into the memory works as well, ex...
Altera_Forum's avatar
Altera_Forum
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10 years ago

Good news TCWORLD. Seems I was able to fix this dispatcher issue. Apparently I had a typo in some of my custom verilog code I wrote, and it was preventing data from being sent to the sgdma. Therefore the descriptors weren't executed since the stream data was never valid. I've only done some preliminary tests so far....

My next operation would be to set up a MM - MM sgdma to transmit the data in SDRAM to external flash. Any suggestions on an open core flash memory controller (SPI not CFI)?

Also I'm concerned with writing and reading to SDRAM - this may cause collisions and/or corruption of data, but I will have to see what happens.

Thanks for the ScatterGatherController code.